Dusting gun



septv 8 1953 c. F. GREGG 2,651,139

' nUsTING GUN Filed Aug. 1o. 1949 asheets-.sheet 1 IN V EN TOR.

Char/es E Greyy ATTORNEY.

C. F. GREGG sept. s, 1953 DUSTING GUN 3 Sheets-Sheet 2 Filed Aug. 10, 1949 I JNVENTOR. Car/es: @regg ATTOHNEYI Sept 8, 1953 c. F. GREGG 2,651,139

DUSTING GUN Filed Aug. 10, 1949 3 Sheets-Sheet 3 Fig. 9v

33 l INVENToR. 35 35 @Mz/les E Greig ZJ. l/u/n.

36 37 ATTO/WVEX Patented Sept. 8, 1953 The present .invention relates-to improvements in dusting. guns, primarily of'that typeforY dis;- tributing 'dusting powders on plants for 'the'vpre'e vention .of insect attack thereon.'

yOne of the objects oflthe invention istolprovide A a dusting gun by which the .powdermay be'. dust ed either on the top'or the. bottom .'side'iof .the leavesV of the plants-oto' heY dusted bythe -simple shaking action on the' :part ofthe "operatorf i Another vobject of the invention'is-Sto provide Vhave illustrated' certain embodimentsltliereof fin the accompanying drawings in which: 1

Fig.' 1 `is a perspective vview'of la dusting .gun embodying my invention;

Fig.` 2 isi -a longitudinal' sectional-kviewiof vvthe structure shown in Fig'.v 1 with the'l handle sleeve removed;

Fig. 4 isv alongitudinallsectionview offa modiiication- 'of my 'invention 'shown .1in Fig.'!1;

Fig. 5 is' a section 'view' showing modified .forms of valves used v-in `connection with mly invention;

Fig; F6 is4 the sectional view Ioni the'. line fof Fig. 5;

Fig. 7 is the sectional view of line '1 -1 of Fig. 5;

Fig. '8 is the sectional" view showing modified form of inlet valve;

Fig.:Y 9 is: theV .sectional view showng..modied form of outlet valve;

Fig. 10 -is the top-plan view ofthe structure shown in Fig. 8, and

Fig.' 1l is the sectional view-onfthe line" II-II of Fig. 9.-

In the embodiment illustratedin Figs.":1,'i2 and 3 I provide a tubular container I which may be cylindrical in form and Which'm'ay be'maideof paper, sheet metal or any desired material. This container 'l is provided at its .top witha removable cap 2 having. avalve opening 3 closed by' a 2v. comprising-'a 'diskralike member `Il preferably se'- curedfiinfpositionlinthe top AI bybeading vthe lower: end off-the top overth'e fdisk. 1 This beading not only .secures the disk in position but also folfmsrva:'shoulderasff'atr I forV the'purpose more fully hereinafter? appearing.

The disk 6 islprovided'witha 'cylindri'calf'nozzle 8,'fhavingra `valve 'opening adapted to be'closed byfa liiapper'valve lI 0 of i thersame rconstruction as theiiappervalve '4.' It-isito be noted, however, that theila'pperrvalve 'I il vopens in=a.direction opposite to-Ithatfoffthe valve-4I.n The nozzle 3 `isprovided around `Ether-"i'circurirferenoe 'with' afplurality of spray.y nozzles L'fl I, whichem-ayi tbe `in the for-m of smal-l5 tubular nozzles" secured in "the discharge nozzle' "8 fandinolined upwardly ast-illustrated -in Fig.2.

`Surrounding the top I is a direction shield I2 which isfsli'dablyfmounted on the' body `I 'and at its upperf'endisfprovided with-a bead I3 which cooperates fwitli'ithe'bea'dfl to limit 'the down ward' anovenrent of '1 the shield I 2 Likewise surrounding jthe :body JI -isacylindrical handle I4 throughFwhichftheloodyul is adapted to reciprocate.

Within thebodynsl I -preferablymount a -coil spring I 5- which may beof `any desired vcross section; `although the cross section illustrated' in the drawingvI have Vfound tofloe.l preferable, `andthis spring visv-iiirfeferably anchoredatitsv upper end as atllftouthetop of the tubular member. The lowerA end of. 'the `ispringxhas secured thereto a disk-.like screen" I 'I4 whieh-is-of sufcient diameter to fit over the nozzle opening in the disk l. In theoper'atiorr fof 1thedevice,rthef cap v2, which may be'i-removedfisremoved andE the desiredy quantity of rdusting .powderis vdeposite'dfin thetubular body member :I.- With the4 cap2 replaced in'position andthe Aoperator grasping the 'cylindrical 'handle I4the wholevtubilar.structure'may be rapidly reciprocated. With the body'memberzbeingreciprocated, fas the' body memberfis moved downward therbottoin'valve i0' will openandthe top valve il will rclos'eiv This-.permits 'a displacement' of 'Y the fbodyfof ftheimaterial npward'relatively to the bodyimiember I'. AiIig.'luiweveix the downward movementoi'fthebdymemb'erflisoler-ought to' a suddeni stoprsthei iof'fth'e'- material will 'move downwardly relative to the body I with the upper valve 4 opening and the 'bottom valve I closing. A piston like downward movement of the material will force the material into the nozzle 8 and out through the spray nozzles II in a direction inclined upwardly from the horizontal.

If, however, it is desired that the dust be directed to the top of the foliage, the shield I2 is lowered to the position illustrated in Fig. 2 and the dusting powder will spray out of the spraying nozzle II and will strike the inner surfaces of the shield I2 and be directed vertically downwardly in a fine mist like form.

During the operation of the ldevice a certain proportion of the dusting powder may become accumulated under the edge of the valve I0, holding the valve slightly open and I have found this to be an advantage as it permits a certain amount of the dusting powder to escape through the valve IIJ which, if desired, may be provided with small openings. The coiled spring I5, with its attached screen I'I serves not only to agitate the dusting powder within the tubular body I and thereby prevent the same from caking, especially under extreme humidity conditions, but also seems to have apiston like eiect in forcing the dusting powder into the nozzle 8. The screen I'I serves to effectually break up the caked dusting powder and furthermore, supplements the piston like action of the spring and the body of the powder, driving the powder into the nozzle 8 with considerable force with the result of a wider distribution of the powder through the spraying nozzles I I.

In Fig. 4 I have shown a modiiication of my invention wherein the cylindrical handle I4 and the shield I2 are made in one part, the handle I8, being in this instance provided with an enlarged extension I9 which is of suflicient length to permit reciprocation of the tube I without moving the nozzle 8 beyond the lower extremity of the shield I9. Of course in the event it is desired to use the gun without the shield I9, the cylindrical handle I8 may be moved higher up on the tube I.

In Figs. 5, 6 and 7 I have illustrated a modied form of a valve which may be used in connection with the tubular member Ia. In this structure a top cap 2l) is securely positioned on the tubular body I through the medium of set screws 2|. This top cap is provided with a valve opening 22 which is closed by a disc like valve 23 having a slightly truncated cone shaped projection 24 which ts within the opening 22. The top of the cap 26 is suiciently spaced apart from the top of the tubular body I to provide a slight clearance whereby the valve may be moved inwardly to open. In order to prevent the valve member 23 from dropping out of the cap when the cap is removed, I provide restraining pins 25.

The bottom valve is substantially of the same construction as the top valve with the exception that the bottom wall of the valve member is provided with louvers 26 which provide escape openings for the dusting powder and due to the direction of the louver walls the powder is discharged in an angular direction.

A still further form of valve for use in connection with my dusting gun is illustrated in Figs. 8 and 9. In Fig. 8 I have shown a top valve which consists of a valve disc V2 adapted to close the opening 3 in the cap 2. This disc is mounted on a threaded stem 28 which, on the exterior of the cap is threaded through a cross member 29 having inturned stops 3U. The exterior end of the stem 28 is provided with a lock nut 3|. By this arrangement the valve may move in and out under the reciprocating movement of the tubular body Ib and the extent of opening is limited by the stop arms 30 the extent of which may be adjusted by adjusting the cross member 29 on the stem 28.

The lower valve, illustrated in Fig. 9, comprises a valve disc 32 having a threaded stem 33 which threads through a cross member 34 having inturned stops 35, similar to the valve illustrated in Fig. 8. However, beyond the cross member 34 I provide a deecting disc 36 through which the valve stem 33 passes. This disc is restrained against downward displacement by the adjusting nutv31.

As heretofore explained the bottom valve does not completely close as a result of a certain amount of dusting powder accumulating on the under side of the valve, or the bottom valve may have discharge openings therein. Under thesey circumstances a certain amount of dusting powder is discharged through the valve and this dusting powder striking on the disc 36 is broken up into ine particles to be evenly distributed.

I claim as my invention:

1. A dusting gun comprising a bodily reciprocable tubular container body adapted to receive and be partially lled with dusting powder and having a discharge opening at its lower end, closure valves disposed at the opposite ends of said body and opening and closing in opposite directions and a screen disposed at the lower end of said body above the discharge opening said valves being closed under the piston-like action of the body of the powder during the reciprocal movement of the container.

2. A dusting gun comprising a bodily reciprocable tubular container body adapted to receive and be partially lled with dusting powder and having a discharge opening at its lower end, closure valves disposed at the upper and lower ends of said body and opening and closing in opposite directions, a coiled spring disposed within said body and a `screen member disposed within said body at the lower end of said spring said valves being closed under the pressure developed by the piston-like action of the body of the powder during the reciprocal movement of the container. f

CHARLES F. GREGG.

YRefaenete cited in the aie of this patent UNITED STATES PATENTS Number Name Date 22,669 Payne Jan. 18, 1859 97,369 Dugdale Nov. 30, 1869 862,984 Marsh Aug. 13, 1907 1,451,138 Bernstein Apr. 10, 1923 1,542,430 Wever June 16, 1925 1,571,311 Wittjen Feb. 2, 1926 1,600,861 Allgrunn Sept. 21, 1926 1,611,388 Stewart Dec. 21, 1926 1,777,278 Huntington Sept. 36, 1930 2,014,789 Suelow Sept. 17, 1935 

